Patents by Inventor Carter B. Cartwright
Carter B. Cartwright has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10845781Abstract: An integrated controller configured to operate in a field includes a network interface module, one or more function modules, and an output module. The network interface module is configured to receive, from a remote host via a communication link, a setpoint for a process variable. The one or more function modules are configured to (i) receive a measurement of a process variable from a field device and (ii) execute logic for a control loop including the field device based at least in part on the measurement of the process variable and the setpoint for the process variable, to generate an output signal independently of the remote host, where the output signal is for controlling the field device. The output module is configured to directly apply the generated output signal to the field device.Type: GrantFiled: March 22, 2016Date of Patent: November 24, 2020Assignee: FISHER CONTROLS INTERNATIONAL LLCInventors: Carter B. Cartwright, Thomas A. Brandau, Jim Anctil, Jordan E. Mandernach
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Patent number: 10386865Abstract: A liquid level control loop optimizer receives a selection of a vessel configuration and a variety of parameters specifying the vessel dimensions, the fluid type(s), and the flow parameters of the liquid level control loop. The optimizer also receives a selection of various valve and actuator options and determines a variety of available configurations based on the selected options. The optimizer simulates each of the available configurations under the conditions specified by the parameters, and determines control loop characteristics and/or properties based on the simulations. The optimizer may display and/or rank the various configurations to assist a user in selecting a configuration that best meets the requirements of the control loop.Type: GrantFiled: September 30, 2014Date of Patent: August 20, 2019Assignee: FISHER CONTROLS INTERNATIONAL LLCInventors: Carter B. Cartwright, Mitchell S. Panther, Jordan E. Mandernach, Melissa R. Niesen
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Publication number: 20160282851Abstract: An integrated controller configured to operate in a field includes a network interface module, one or more function modules, and an output module. The network interface module is configured to receive, from a remote host via a communication link, a setpoint for a process variable. The one or more function modules are configured to (i) receive a measurement of a process variable from a field device and (ii) execute logic for a control loop including the field device based at least in part on the measurement of the process variable and the setpoint for the process variable, to generate an output signal independently of the remote host, where the output signal is for controlling the field device. The output module is configured to directly apply the generated output signal to the field device.Type: ApplicationFiled: March 22, 2016Publication date: September 29, 2016Applicant: FISHER CONTROLS INTERNATIONAL LLCInventors: Carter B. Cartwright, Thomas A. Brandau, Jim Anctil, Jordan E. Mandernach
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Publication number: 20150090342Abstract: A liquid level control loop optimizer receives a selection of a vessel configuration and a variety of parameters specifying the vessel dimensions, the fluid type(s), and the flow parameters of the liquid level control loop. The optimizer also receives a selection of various valve and actuator options and determines a variety of available configurations based on the selected options. The optimizer simulates each of the available configurations under the conditions specified by the parameters, and determines control loop characteristics and/or properties based on the simulations. The optimizer may display and/or rank the various configurations to assist a user in selecting a configuration that best meets the requirements of the control loop.Type: ApplicationFiled: September 30, 2014Publication date: April 2, 2015Inventors: Carter B. Cartwright, Mitchell S. Panther, Jordan E. Mandernach, Melissa R. Niesen
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Publication number: 20140130874Abstract: A system and method for validating the availability and operability of a field device in a process plant is provided. A diagnostic apparatus includes a processor coupled to the field device wherein a diagnostic check is executed to remotely determine the availability and operability of the field device.Type: ApplicationFiled: November 12, 2012Publication date: May 15, 2014Applicant: FISHER CONTROLS INTERNATIONAL LLCInventors: Brian J. Burlage, Carter B. Cartwright
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Patent number: 8483998Abstract: A system and method for accurately measuring supply gas consumed by a particular process control component within a process control system is disclosed. Enhanced measurement accuracy is derived from measuring the consumption of the process control component in a normal operating mode of the process control system. The amount of fluid expended by one process control component is separated by a fluid control system from the amount of supply gas expended in actuating other process control components. The amount of fluid expended by each component may be determined by measuring a decrease in a fluid within a vessel having a known quantity that independently supplies supply gas to each component during its operation.Type: GrantFiled: September 22, 2010Date of Patent: July 9, 2013Assignee: Fisher Controls International LLCInventors: Michel Ken Lovell, Carter B. Cartwright
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Publication number: 20110071688Abstract: A system and method for accurately measuring supply gas consumed by a particular process control component within a process control system is disclosed. Enhanced measurement accuracy is derived from measuring the consumption of the process control component in a normal operating mode of the process control system. The amount of fluid expended by one process control component is separated by a fluid control system from the amount of supply gas expended in actuating other process control components. The amount of fluid expended by each component may be determined by measuring a decrease in a fluid within a vessel having a known quantity that independently supplies supply gas to each component during its operation.Type: ApplicationFiled: September 22, 2010Publication date: March 24, 2011Applicant: FISHER CONTROLS INTERNATIONAL LLCInventors: Michel K. Lovell, Carter B. Cartwright
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Patent number: 7818092Abstract: A system and method for accurately measuring supply gas consumed by a particular process control component within a process control system is disclosed. Enhanced measurement accuracy is derived from measuring the consumption of the process control component in a normal operating mode of the process control system. The amount of fluid expended by one process control component is separated by a fluid control system from the amount of supply gas expended in actuating other process control components. The amount of fluid expended by each component may be determined by measuring a decrease in a fluid within a vessel having a known quantity that independently supplies supply gas to each component during its operation.Type: GrantFiled: January 20, 2006Date of Patent: October 19, 2010Assignee: Fisher Controls International LLCInventors: Michel K. Lovell, Carter B. Cartwright
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Patent number: 6905108Abstract: A valve includes a fluid inlet passage having a fluid inlet, a fluid outlet passage, an orifice between the fluid inlet passage and the fluid outlet, and a moveable valve plug adapted to move with respect to the orifice to vary the flow of fluid between the fluid inlet passage and the fluid outlet passage. A movable valve stem is attached to the valve plug and a travel limiting device is attached to the valve stem. The travel limiting device permits the valve to be placed in one of a plurality of desired flow configurations.Type: GrantFiled: May 10, 2002Date of Patent: June 14, 2005Assignee: Fisher Controls International LLC.Inventors: Randy J. Hall, Ronald C. Burr, Mark D. Stiehl, Brian J. Burlage, Carter B. Cartwright
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Publication number: 20030089867Abstract: A valve includes a fluid inlet passage having a fluid inlet, a fluid outlet passage, an orifice between the fluid inlet passage and the fluid outlet, and a moveable valve plug adapted to move with respect to the orifice to vary the flow of fluid between the fluid inlet passage and the fluid outlet passage. A movable valve stem is attached to the valve plug and a travel limiting device is attached to the valve stem. The travel limiting device permits the valve to be placed in one of a plurality of desired flow configurations.Type: ApplicationFiled: May 10, 2002Publication date: May 15, 2003Inventors: Randy J. Hall, Ronald C. Burr, Mark D. Stiehl, Brian J. Burlage, Carter B. Cartwright